Since measles-mumps-rubella (MMR) and varicella vaccinations are established as routine childhood practice and often co-administered during the second year of life, a combined measles-mumps-rubella-varicella (MeMuRu-OKA) vaccine is fully justified. Such a combined vaccine was developed and extensively studied in susceptible children. In countries where varicella mass-vaccination is already implemented, a transition period is necessary as children who started with separate first-dose vaccinations of MMR and varicella will receive a single shot of the combined vaccine as the second dose. To account for those situations, this study will evaluate the effect of the combined measles-mumps-rubella-varicella vaccine given in place of separate MMR and varicella vaccines as a second dose.

Detailed Description

Record Verification Date

September 28, 2011

Why Study Stopped

Study Start Date

April 2006

Study Completion Date

November 2006

Study Completion Date Type

Actual

Primary Completion Date

Primary Completion Date Type

Actual

Primary Purpose

prevention

Allocation

Randomized

Masking

Open Label

Masked Subject

no

Masked Caregiver

no

Masked Investigator

no

Masked Assessor

no

Study Design (Assignment)

Parallel Assignment

Study Classification (Endpoint)

Safety/Efficacy Study

Primary Outcomes

Varicella, MMR titres at 42-56 days after first vaccination
Time Frame:
Safety Issue: No

Exclusion Criteria: - immunosuppressive (including HIV) conditions, allergic diseases, neurological disorders, known anaphylactic reaction to MMR vaccine, and fever (axillary temperature ³ 37.5°C at the time of vaccination) are excluding factors. Children must have received one dose (but not more) of MMR and of varicella vaccine at least 6 weeks before entering the study. They must not receive or have received other non-registered drug or vaccine within 30 days prior to study start, or immunosuppressants for more than 14 days. Immunoglobulins or any blood products are prohibited during the 6 months before and during the study, as well as vaccine other than that foreseen by the protocol, 30 days before until 56 days after vaccination. They must not have had measles, mumps, rubella or varicella, or have been exposed to those diseases within 30 days prior to study start. New-born infants (< 5 weeks of age), pregnant women without previous exposure to chickenpox, and immunodeficient persons cannot live in the same household as the vaccinated child.